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Q.

There are 100 students in a class, in which 35 students reasoning, 30 students studies Maths and 25 students studies arthamatic. 15 students studies both reasoning and Maths, 10 students studies both Maths and Arthmetic and 15 students studies both reasoning and arthmetic. 5 students studies all the three subjects.

   How many students studies atleast one subject ?

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a

20

b

25

c

30

d

55

answer is B.

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Detailed Solution

10 + 10 + 5 = 25

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